With the advent and increasing popularity of Semantic Wikis and the Linked Data the man- agement of semantically represented knowledge became mainstream. However, certain categories of semantically enriched content, such as multimodal documents as well as multilingual textual resources are still difficult to handle. In this paper, we present a comprehensive strategy for managing the life-cycle of both multimodal and multilingual semantically enriched content. The strategy is based on extending a number of semantic knowledge management techniques such as authoring, versioning, evolution, access and exploration for semantically enriched multimodal and multilingual content. We showcase an implementation and user interface based on the semantic wiki paradigm and present a use case from the e-tourism domain.